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Mathematics 15 Online
OpenStudy (paranoia):

Factor f(x) = x4 + x3 – 8x2 + 6x + 36 completely. Then sketch the graph.

OpenStudy (paranoia):

i got the factor (x+2) (x+3) (x^2-4x+6) but idk how to do the rest

satellite73 (satellite73):

what is "the rest"?

satellite73 (satellite73):

you have factored it completely, unless you want to introduce complex numbers \[x^2-4x+6\] as no real zeros, so does not factor

OpenStudy (paranoia):

i have to plot it and graph but idk how

satellite73 (satellite73):

you got two zeros, put them on the graph

OpenStudy (paranoia):

i think i need to use the quadratic formula somehow but im rly confused

satellite73 (satellite73):

no no quadratic formula

satellite73 (satellite73):

like i said \[x^2-4x+6\] has no zeros graph only crosses the x axis twice

satellite73 (satellite73):

here is a nice picture, you can see it crosses the x axis only at -3 and -2 http://www.wolframalpha.com/input/?i=x4+%2B+x3+%E2%80%93+8x2+%2B+6x+%2B+36

OpenStudy (paranoia):

oh ok, but how do i show how to get that graph

OpenStudy (paranoia):

like how do i actually know that and graph it

OpenStudy (paranoia):

wait i think i got it lol

OpenStudy (paranoia):

im still confused on how to plot the points

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